148929 20250923084443.0 doi 10.1016/j.cattod.2025.115197 sideral 142113 ART-2025-142113 eng Larumbe, Nadia Universidad de Zaragoza (orcid)0009-0005-3534-895X Towards the effective removal of environmental strains of bacteria from real wastewater by heterostructured photocatalysts 2025 Access copy available to the general public Unrestricted Access to clean water is crucial for human health, yet microbial contamination poses significant challenges. This study investigates the effectiveness of novel photocatalytic catalysts: heterostructured TiO2/AgBr and faceted titanium dioxide, for microbial inactivation under ultraviolet and visible light. Both catalysts were synthesized and characterized. Performance was evaluated using real wastewater samples and saline solutions, targeting gram-positive and gram-negative bacteria. The experimental approach included testing the photocatalysts with and without the addition of peroxydisulfate to assess its impact on inactivation effectiveness. Results indicated that the TiO2/AgBr catalyst outperformed the faceted titanium dioxide one due to its superior visible light absorption and enhanced charge separation, achieving complete inactivation of environmental strains of Escherichia coli and significant inactivation for Enterococcus faecalis in real wastewater. The inclusion of peroxodisulfate with TiO2/AgBr significantly improved inactivation rates, demonstrating a synergistic effect. Regarding wastewater composition, the treatment achieves a significant COD removal while the rest of studied parameters remain stable. Both catalysts effectively prevented bacterial regrowth for up to 48 hours, underscoring its long-term efficacy. Overall, these findings highlight the potential application of TiO2/AgBr combined with peroxodisulfate as an effective strategy for microbial inactivation, contributing to the advancement in water treatment technologies across real environmental contexts. info:eu-repo/grantAgreement/ES/DGA/B43-23R info:eu-repo/grantAgreement/ES/MICINN/AEI/TED2021-129267B-I00 info:eu-repo/semantics/embargoedAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Moles, Samuel Universidad de Zaragoza (orcid)0000-0002-1401-7511 Hidalgo, M. Carmen Rubio, Encarnación Universidad de Zaragoza (orcid)0000-0002-9273-5885 Goñi, Pilar Universidad de Zaragoza (orcid)0000-0003-0765-7227 Mosteo, Rosa Universidad de Zaragoza (orcid)0000-0002-7456-4912 1011 660 Universidad de Zaragoza Dpto. Microb.Ped.Radio.Sal.Pú. Área Parasitología 1011 615 Universidad de Zaragoza Dpto. Microb.Ped.Radio.Sal.Pú. Área Medic.Prevent.Salud Públ. 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 449 (2025), 115197 [8 pp.] Catal. today Catalysis Today 0920-5861 1205218 http://zaguan.unizar.es/record/148929/files/texto_completo.pdf Versión publicada info:eu-repo/date/embargoEnd/2027-01-10 2517670 http://zaguan.unizar.es/record/148929/files/texto_completo.jpg?subformat=icon icon Versión publicada info:eu-repo/date/embargoEnd/2027-01-10 oai:zaguan.unizar.es:148929 articulos driver 2025-09-22-14:52:06 ARTICLE